Results 81 to 90 of about 6,217,471 (191)

Contorted stratification with clay lobes in volcanic ash beds, Raglan-Hamilton region, New Zealand [PDF]

open access: yes, 1970
Contorted stratification in basal volcanic ash beds of the Pleistocene Hamilton Ash Formation incorporates halloysitic clay lobes which project upward into a bed of predominantly allophanic material.
Tonkin, Philip J.
core  

Evaluation of Pelletized Artificial Geopolymer Aggregate Manufactured From Volcano Ash [PDF]

open access: yes, 2013
This paper introduced the new pelletized artificial geopolymer aggregate made from volcano ash. This is one of the effort to diminish the high quantity of volcano mud from East Java, Indonesia, that become a major issue since May 29, 2006 when it ...
Nizar, I. Khairul   +11 more
core  

Persistence of Soil Water Repellency After the 2022 Bolt Creek Fire

open access: yesGeosciences
Wildfire ash and water-repellent soil are new materials that are formed after a wildfire that change the mechanical and hydraulic behavior of wildfire-burned slopes. Wildfire ash is known to be typically hydrophilic and to retain water, whereas the water-
Mustafa Demir   +2 more
doaj   +1 more source

Analiza comparativă a biomasei obţinute din culturi energetice

open access: yesAgricultural Science, 2014
The field of research of this this paper is connected with the efficient valorization of renewable energy sources by ensuring the quality of solid biofuels produced from lignocellulosic biomass, derived from energy crops.
MARIAN Grigore   +4 more
doaj  

Development of Performance Properties of Ternary Mixtures and Concrete Pavement Mixture Design and Analysis (MDA): Effect of Paste Quality on Fresh and Hardened Properties of Ternary Mixtures, TPF-5(117), 2012 [PDF]

open access: yes, 2012
The purpose of this study was to investigate the effect of cement paste quality on the concrete performance, particularly fresh properties, by changing the water-to-cementitious materials ratio (w/cm), type and dosage of supplementary cementitious ...

core  

Optimizing Cementitious Content in Concrete Mixtures for Required Performance Final Report, January 2012 [PDF]

open access: yes, 2012
This research investigated the effects of changing the cementitious content required at a given water-to-cement ratio (w/c) on workability, strength, and durability of a concrete mixture.

core  

Synthesis and Characterization of Briquette from Carbonized Pinus Patula Saw Dust as Alternative Energy Source

open access: yesIndonesian Journal of Innovation and Applied Sciences
This study aimed at the synthesis and characterization of briquette from Pinus patula saw dust using different binders. The effects of particle size and type of binder on the fuel qualities of the briquette were investigated.
Gemechu Yadeta   +6 more
doaj   +1 more source

The influence of fly ash as substitute of cement in the durability of concrete [PDF]

open access: yes, 2008
Limitation of transport capacity through the concrete is one of the key points in the improvement of the material’s durability. The use of fly ash as an admixture to concrete is widely extended; a general consensus has been established due to the pore ...
Moragues Terrades, Amparo   +3 more
core  

Home - About - Disclaimer - Privacy